C70 Combination Air Valve with Surge Protection

Bermad C70-SP is a high quality combination air valve (approved to AS4956 and appraised by WSAA) for a variety of water networks and operating conditions.  It evacuates air during pipeline filling, allows efficient release of air pockets from pressurized pipes with a surge protection device minimising potential water hammer, and enable large volume of air intake in the event of network draining.  With its advanced aerodynamic design, double orifice anti-slam/slow closing device, this valve provides excellent protection against air accumulation, vacuum formation and pressure surges, with improved sealing in low pressure conditions.  The valve minimizes water spraying during air release.

Bermad C70-SP Combination Air Valve


  • Fully approved and acredited to AS4956 , AS4020, AS4158 , AS4087
  • Fully WSAA appraised product.
  • Standard fitted with surge protection mechanism
  • Straight flow body with nominal (equal) inlet and outlet size
  • Aerodynamic full-body kinetic shield
  • Innovative 2-step function, automatic orifice
  • Optional outlets
  • 2 service ports
  • Drainage valve
  • Compact, simple, robust and reliable structure
  • Fully corrosion-resistant parts
  • Optional  inflow prevention and insect screen

Benefits include;

  • Higher than usual air flow rates
  • Low pressure sealing (0.1bar)
  • Minimizes water spraying during air release
  • Lower maintenance and increased life span